A nurse is assisting with the care of a preschooler who is postoperative following tetralogy of Fallot correction. Which of the following manifestations indicates the child is possibly experiencing decreased cardiac output?

Choice A reason: Diminished pulses can be indicative of decreased cardiac output, as it suggests that there may be a reduction in the volume of blood being pumped by the heart. Choice B reason: Extremities warm to touch is not necessarily indicative of decreased cardiac output. It may be related to other factors, such as ambient temperature or local blood flow. Choice C reason: Capillary refill of 2 seconds is within the normal range for a preschooler, and it is not a strong indicator of decreased cardiac output. Choice D reason: A blood pressure of 112/66 mm Hg is within the normal range for a preschooler and is not a strong indicator of decreased cardiac output.